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Very fast idle


shreddy
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I recently bought an 03 Gas Gas TXT Pro 125 and am just getting around to final fettling. It was running fine when bought, but I drained and filled with new petroil the other day. First time I started it all was OK. Started it again the other night (to warm it up and change gearbox oil), but it wouldn

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hi shreddy

like you i dont think there is a link to the oil / fuel you put in. I put some thoughts down for you to think about.

What changed (in detail) between before and after

--you removed the fuel cap, did you pull on/dislodge the throttle cable

-----at the throttle grip

-----at the carb cap

-----etc.

-----etc.

Does the carb slide make a nice thwack when you wind open the throttle and let go?

Is the throttle cable kinked / frayed anywhere (inside the throttle housing?)

Has the tickover screw been accidentaly been adjusted?

Was the carb wobbled / tweaked unknowingly to create an air leak at the inlet rubber?

Are the inlet rubber jubilee clips tight?

Just a few ideas !!

Good luck

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